Definition of slow-scan in English:

adjective

When assembled with the appropriate detector, optics, and slow-scan mechanism, the polygonal scanner forms a useful data acquisition device in applications like web inspection or fluorescence microscopy.

Along the slow-scan axis the average particle movement was 9 14 nm downward in up-then-down scans and 7 11 upward in down-then-up scans.

These included chat software, Webcams, slow-scan television, and the early videoconferencing attempts.